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21. 发明授权

US08184119B2 Fast ambient occlusion for direct volume rendering 有权
标题翻译：快速环境遮挡直接体积渲染
公开(公告)号：US08184119B2
公开(公告)日：2012-05-22
申请号：US11455627
申请日：2006-06-19
申请人： Philippe Desgranges , Klaus Engel
发明人： Philippe Desgranges , Klaus Engel
IPC分类号： G06T17/00 , G06T15/50 , G06T15/60 , G06K9/64 , G09G5/00
CPC分类号： G06T15/506 , G06T15/08
摘要： A method of direct volume rendering is provided comprising combining ambient occlusion volumes terms from a plurality of different filtered volumes using filters with different radii. During an ambient occlusion computation phase, the method obtains ambient occlusion terms from a plurality of different filtered volumes and, combining the ambient occlusion terms from the plurality of different filtered volumes into a composite ambient volume occlusion. During a subsequent volume rendering phase, data acquired from the subject is processed using the composite ambient volume occlusion to obtain a shaded rendition of an image of the subject.
摘要翻译：提供了一种直接体绘制方法，包括使用具有不同半径的滤波器来组合来自多个不同滤波体积的环境遮挡体积项。在环境遮挡计算阶段期间，该方法从多个不同的滤波体积获得环境遮挡项，并将来自多个不同滤波体积的环境遮挡项组合成复合环境容积闭塞。在随后的体积渲染阶段期间，使用复合环境体积闭塞来处理从对象获取的数据，以获得对象的图像的阴影再现。

22. 发明授权

US07952592B2 System and method for view-dependent cutout geometry for importance-driven volume rendering 有权
标题翻译：重要性驱动体绘制的视图相关的剪切几何的系统和方法
公开(公告)号：US07952592B2
公开(公告)日：2011-05-31
申请号：US11852407
申请日：2007-09-10
申请人： Michael Burns , Klaus Engel
发明人： Michael Burns , Klaus Engel
IPC分类号： G09G5/00
CPC分类号： G06T17/20 , G06T15/08 , G06T17/10
摘要： A method for creating a cutout surface for volume rendering includes providing a digitized medical image volume comprising a plurality of intensities corresponding to a 3-dimensional grid of points, identifying a surface of interest in said image volume, representing said surface-of-interest by a polygonal mesh, extracting a set of curves on said surface-of-interest where a cutout surface will intersect, extending a vector defined on one of said curves toward a viewing point, and sweeping said extended vector along said curve to create said cutout surface.
摘要翻译：用于创建用于体绘制的切割表面的方法包括提供数字化的医学图像体积，其包括对应于三维网格点的多个强度，以识别所述图像体积中感兴趣的表面，代表感兴趣的表面，由多边形网格，提取所述感兴趣的表面上的一组曲线，其中切口表面将相交，将限定在其中一条曲线上的向量延伸到观察点，并且沿着所述曲线扫掠所述扩展矢量以创建所述切口表面。

23. 发明授权

US07616199B2 System and method for interleaved slice volume rendering 失效
标题翻译：用于交错切片体积渲染的系统和方法
公开(公告)号：US07616199B2
公开(公告)日：2009-11-10
申请号：US11481129
申请日：2006-07-05
申请人： Klaus Engel
发明人： Klaus Engel
IPC分类号： G06T15/00 , G06T17/00
CPC分类号： G06T15/005 , G06T15/08
摘要： A method for volume rendering a digitized image includes providing a digitized 3-dimensional image with a plurality of 2-dimensional slices comprised of a plurality of intensities corresponding to a domain of points on a 2-dimensional grid, interleaving said slices so that a predetermined number of slices are represented within 2-dimensional textures comprising slabs. Each said slab comprises a plurality of polygons. Weighting functions are generated for each slice of each polygon of a slab, and using said weighting functions, computing a trilinarly interpolated sample from multiple bilinearly interpolated samples value for each slice of said polygon.
摘要翻译：用于体绘制数字化图像的方法包括：提供具有多个2维切片的数字化3维图像，所述多个2维切片由对应于二维网格上的点的区域的多个强度组成，交织所述切片，使得预定切片的数量在包括平板的二维纹理内被表示。每个所述板包括多个多边形。为板的每个多边形的每个切片生成加权函数，并且使用所述加权函数，从所述多边形的每个切片的多个双线性内插样本值计算三次内插样本。

24. 发明申请

US20090189889A1 Method and apparatus for visualizing 3D image data from tomographic imaging modalities 有权
标题翻译：用于从断层成像模式可视化3D图像数据的方法和装置
公开(公告)号：US20090189889A1
公开(公告)日：2009-07-30
申请号：US12318808
申请日：2009-01-08
申请人： Klaus Engel , Stefan Rottger
发明人： Klaus Engel , Stefan Rottger
IPC分类号： G06T17/00
CPC分类号： G03B42/02 , G06T15/06
摘要： At least one embodiment of the present invention relates to a method and an apparatus for visualizing 3D image data from tomographic imaging modalities using a rendering technique in which every pixel is calculated by integrating or summing along respectively one ray through a volume surrounded by the 3D image data. In the method, a peeling function is additionally introduced into the integration or summation, by which, in the integration or summation, the 3D image data on the respective ray only contributes with its full data value to reducing the optical transparency beyond a prescribable value of an optical skin depth. The peeling function is selected such that, in a transition region before the prescribable value of the optical skin depth is reached, the 3D image data on the ray still contributes to reducing the optical transparency with a fraction of its full data value such that there is a smooth profile, generated by the peeling function, when an outer layer is peeled off. The method and the associated apparatus make it possible to avoid image artifacts such as pixel flickering during volume visualization.
摘要翻译：本发明的至少一个实施例涉及一种用于使用渲染技术来从断层图像成像模态来可视化3D图像数据的方法和装置，其中通过将由3D图像包围的体积分别地对一个射线进行积分或求和来计算每个像素数据。在该方法中，将剥离功能另外引入到积分或求和中，通过该积分或求和，在相关射线上的3D图像数据的积分或求和中仅贡献其全部数据值，以将光学透明度降低到超过规定值光学皮肤深度。选择剥离功能，使得在达到光学趋肤深度的规定值之前的过渡区域中，光线上的3D图像数据仍然有助于以其全部数据值的一部分降低光学透明度，使得存在当外层被剥离时，由剥离功能产生的光滑轮廓。该方法和相关联的设备使得可以在体积可视化期间避免图像伪像，例如像素闪烁。

25. 发明申请

US20080297508A1 DISTRIBUTED CALCULATION OF IMAGES OF VOLUMETRIC OBJECTS 失效
标题翻译：分布式计算体积图像的图像
公开(公告)号：US20080297508A1
公开(公告)日：2008-12-04
申请号：US12105767
申请日：2008-04-18
申请人： Jesko Schwarzer , Klaus Engel , Alexander Ehlert , Frederik Lange
发明人： Jesko Schwarzer , Klaus Engel , Alexander Ehlert , Frederik Lange
IPC分类号： G06T17/00
CPC分类号： G06T15/08
摘要： A method for calculating an image in the context of a volume visualization by ray casting using a plurality of computing nodes is provided. The method includes subdividing a volume that is to be visualized into subvolumes assigned to the plurality of computing nodes; assigning a subdivision of data to volume points and storing the subdivision of data in a memory associated with the plurality of computing nodes, the subdivision corresponding to the assignment of subvolumes to nodes; and computing at least one pixel by generating a ray leading through the volume, wherein computing includes taking into account points lying on the ray one after another.
摘要翻译：提供了一种用于通过使用多个计算节点的射线投射在音量可视化的上下文中计算图像的方法。该方法包括将要被可视化的卷细分为分配给多个计算节点的子卷; 将数据的细分分配给卷点，并将数据的细分存储在与所述多个计算节点相关联的存储器中，所述细分对应于将子卷分配给节点; 以及通过产生通过所述卷通过的射线来计算至少一个像素，其中计算包括考虑到躺在所述射线上的点。

26. 发明申请

US20080079722A1 SYSTEM AND METHOD FOR VIEW-DEPENDENT CUTOUT GEOMETRY FOR IMPORTANCE-DRIVEN VOLUME RENDERING 有权
标题翻译：用于显着驱动体积渲染的依赖于切换几何的系统和方法
公开(公告)号：US20080079722A1
公开(公告)日：2008-04-03
申请号：US11852407
申请日：2007-09-10
申请人： Michael Burns , Klaus Engel
发明人： Michael Burns , Klaus Engel
IPC分类号： G06T17/00 , G06T1/00
CPC分类号： G06T17/20 , G06T15/08 , G06T17/10
摘要： A method for creating a cutout surface for volume rendering includes providing a digitized medical image volume comprising a plurality of intensities corresponding to a 3-dimensional grid of points, identifying a surface of interest in said image volume, representing said surface-of-interest by a polygonal mesh, extracting a set of curves on said surface-of-interest where a cutout surface will intersect, extending a vector defined on one of said curves toward a viewing point, and sweeping said extended vector along said curve to create said cutout surface.
摘要翻译：用于创建用于体绘制的切割表面的方法包括提供数字化的医学图像体积，其包括对应于三维网格点的多个强度，以识别所述图像体积中感兴趣的表面，代表感兴趣的表面，由多边形网格，提取所述感兴趣的表面上的一组曲线，其中切口表面将相交，将限定在其中一条曲线上的向量延伸到观察点，并且沿着所述曲线扫掠所述扩展矢量以创建所述切口表面。

27. 发明申请

US20070229500A1 SYSTEM AND METHOD FOR IN-CONTEXT MPR VISUALIZATION USING VIRTUAL INCISION VOLUME VISUALIZATION 有权
标题翻译：使用虚拟入侵体视觉化的内在MPR可视化的系统和方法
公开(公告)号：US20070229500A1
公开(公告)日：2007-10-04
申请号：US11684685
申请日：2007-03-12
申请人： Klaus Engel , James Williams
发明人： Klaus Engel , James Williams
IPC分类号： G06T17/00
CPC分类号： G06T19/00 , G06T15/08 , G06T2219/008 , Y10T428/24355 , Y10T428/25
摘要： A method for multi-planar reconstruction of digitized medical images includes providing an image volume, sampling the neighborhood about each point in a planar region and saving a color value and a depth, providing a projection plane onto which rendering rays are projected from a viewing point through said image volume, advancing sampling points along rays through the image volume, computing depths of each sampling point, determining for sampling points on rays that penetrates the planar region if a depth of said sampling point is less than the buffer depth of a corresponding point in the planar region and sampling neighborhoods of points about such sampling points, determining if sampling points are near said planar region, applying first transfer function to sample values interpolated from first volume for sampling points close to or inside the planar region, and otherwise applying second transfer function to sample values interpolated from second volume.
摘要翻译：一种用于数字化医学图像的多平面重构的方法包括提供图像体积，对平面区域中的每个点进行邻域采样，并且保存颜色值和深度，从而提供投影平面，在该投影平面上，从观察点通过所述图像体积，沿着光线通过图像体积推进采样点，计算每个采样点的深度，如果所述采样点的深度小于对应点的缓冲器深度，则确定穿透平面区域的射线上的采样点在平面区域中，并且对这些采样点的点的采样邻域，确定采样点是否靠近所述平面区域，将第一传递函数应用于从接近或在平面区域内的采样点从第一体积内插的采样值，传递函数到从第二卷插值的样本值。

28. 发明申请

US20070064000A1 System and method for interleaved slice volume rendering 失效
标题翻译：用于交错切片体积渲染的系统和方法
公开(公告)号：US20070064000A1
公开(公告)日：2007-03-22
申请号：US11481129
申请日：2006-07-05
申请人： Klaus Engel
发明人： Klaus Engel
IPC分类号： G06T15/00
CPC分类号： G06T15/005 , G06T15/08
摘要： A method for volume rendering a digitized image includes providing a digitized 3-dimensional image with a plurality of 2-dimensional slices comprised of a plurality of intensities corresponding to a domain of points on a 2-dimensional grid, interleaving said slices so that a predetermined number of slices are represented within 2-dimensional textures comprising slabs. Each said slab comprises a plurality of polygons. Weighting functions are generated for each slice of each polygon of a slab, and using said weighting functions, computing a trilinearly interpolated sample from multiple bilinearly interpolated samples value for each slice of said polygon.
摘要翻译：用于体绘制数字化图像的方法包括：提供具有多个2维切片的数字化3维图像，所述多个2维切片由对应于二维网格上的点的区域的多个强度组成，交织所述切片，使得预定切片的数量在包括平板的二维纹理内被表示。每个所述板包括多个多边形。为板的每个多边形的每个切片生成加权函数，并且使用所述加权函数，从所述多边形的每个切片的多个双线性内插采样值计算三线性内插样本。

29. 发明申请

US20070017733A1 Vehicle power steering system 审中-公开
标题翻译：车辆动力转向系统
公开(公告)号：US20070017733A1
公开(公告)日：2007-01-25
申请号：US11150171
申请日：2005-06-13
申请人： Joey Edson , Klaus Engel , Randy Foster , Aleksandar Jankovic , Richard Meckstroth
发明人： Joey Edson , Klaus Engel , Randy Foster , Aleksandar Jankovic , Richard Meckstroth
IPC分类号： B62D5/04
CPC分类号： B62D5/09
摘要： A vehicle power steering system includes a sweep magnet, at least one Hall sensor, and at least one hydraulic-power-steering-system valve. The sweep magnet is fixedly connected to a first end of a twistable steering torsion bar wherein the first end is fixedly connected to a vehicle steering wheel. The at-least-one Hall sensor is fixedly connected to a second end of the steering torsion bar. The at-least-one Hall sensor has an output and is positioned proximate the sweep magnet such that the output is a function of steering wheel torque when the vehicle steering wheel is turned by a driver. The at-least-one hydraulic-power-steering-system valve is operatively connected to the output.
摘要翻译：车辆动力转向系统包括扫掠磁体，至少一个霍尔传感器和至少一个液压动力转向系统阀。扫掠磁体固定地连接到可扭转转向扭杆的第一端，其中第一端固定地连接到车辆方向盘。至少一个霍尔传感器固定地连接到转向扭杆的第二端。至少一个霍尔传感器具有输出并且位于扫掠磁体附近，使得当驾驶员转动车辆方向盘时，该输出是方向盘转矩的函数。至少一个液压动力转向系统阀可操作地连接到输出。

30. 发明申请

US20070013696A1 Fast ambient occlusion for direct volume rendering 有权
标题翻译：快速环境遮挡直接体积渲染
公开(公告)号：US20070013696A1
公开(公告)日：2007-01-18
申请号：US11455627
申请日：2006-06-19
申请人： Philippe Desgranges , Klaus Engel
发明人： Philippe Desgranges , Klaus Engel
IPC分类号： G06T15/50
CPC分类号： G06T15/506 , G06T15/08
摘要： A method of direct volume rendering is provided comprising combining ambient occlusion volumes terms from a plurality of different filtered volumes using filters with different radii. During an ambient occlusion computation phase, the method obtains ambient occlusion terms from a plurality of different filtered volumes and, combining the ambient occlusion terms from the plurality of different filtered volumes into a composite ambient volume occlusion. During a subsequent volume rendering phase, data acquired from the subject is processed using the composite ambient volume occlusion to obtain a shaded rendition of an image of the subject.
摘要翻译：提供了一种直接体绘制方法，包括使用具有不同半径的滤波器来组合来自多个不同滤波体积的环境遮挡体积项。在环境遮挡计算阶段期间，该方法从多个不同的滤波体积获得环境遮挡项，并将来自多个不同滤波体积的环境遮挡项组合成复合环境容积闭塞。在随后的体积渲染阶段期间，使用复合环境体积闭塞来处理从对象获取的数据，以获得对象的图像的阴影再现。

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